A couple more thoughts on both. This is base on work on both a P45+ and IQ160
With the Schneider, XL 35mm I found that the Center filter was a must have other wise the amount of noise in the frames was too harsh. The Center filter is about a 2.5 stop correction to the center of the image. If you shift the lens, then the CF to me is also a must have other wise the LCC correction is really not worth it. Just too much noise. I have taken the 35 XL to 5mm, 10mm and 15mm. At 5mm it's excellent at F11 with really no saturation fall off or smearing of details. At 10mm you start to see the famous Magenta band that this lens seems to generate at least on the IQ backs. You also see some detail smearing and loss of color saturation. The LCC when viewed on the camera LCD will also show a bit of the magenta color. At 15mm all bets are off. The last 5mm are pretty worthless as you have almost total lack of color/saturation and you see a very prominent magenta band on the far side of the image. The image detail here is not recoverable and the color depending on the subject may or may not be. When I viewed the LCC on a 15mm shift, I also noticed banding in the Magenta which surprised me a bit. Amazingly, Capture One will correct for this and give you a pretty clean LCC, but even after this the amount of detail smearing rules out using this amount of shift. I base these issues on the curvature of the lens.
The 35mm Rodenstock, has a few other issues, which IMO make it even a worse consideration if you want to shift.
The aforementioned disk is a big problem. This disk has been written about in Guy's review of the 28mm Rodenstock. Apparently it's there to let you know when you have hit the edge of the image circle. On a IQ160 back, you will hit this disk on a horizontal shift at 5mm. It's non recoverable. But you may have a even greater problem, the penumbra of the image circle. On the 28mm Rodenstock this will show as a lighter white band that follows the curve of the image circle. If you are shooting against a blue sky or any other solid subject the penumbra will create a visible mark on your shot and you can't correct for it, the LCC will not effect it either. This effectively makes your shift only worth 2mm or so. Due to the layout of the IQ160 sensor I believe you hit the penumbra faster on a shift than on a rise. When Guy tested his 28mm Rodenstock he was mainly testing rise and it doesn't seem to show up as fast. I have wondered if the 32HR has the same disk and penumbra issues. Since the 35mm Rodenstock and 28mm have the same image circle 70mm, it's very possible that you will have this same issue with the penumbra on it. At least on the 28mm these issues are really a compromise to a great optic as you can shift this lens to even 12mm and you will see no loss of detail to smearing or color/sat loss. However due to the penumbra marks and the disk you pretty much can't use most of the shifted image.
The other concern on the 35mm Rodenstock is that it still will vignette on both a P45 and IQ160. Enough that I would still like to have a CF for it but as far as I know Rodenstock does not make a physical CF for this lens. Once again you have the issues of making the LCC do more work than it can handle and you will start to see noise build up. It's another amazing optic which to me is compromised for shifting.
I don't think there really is affordable lens that works for shifting on the newer backs in the 35mm range. To me a 8mm shift for landscape is really not worth the effort as I would need at least 15mm to really get what I looking for and 20mm would be better. The 32HR may have been redesigned to remove the disk and penumbra issue but at over 10K with the CF (and it needs the CF) it's just out of my range.
If you want to shift with 35mm, you really are going to need to consider the 35XL Schneider, if what you are shooting is more rise than shift you may be OK since you won't hit the penumbra as fast.
Paul